Manufacture of artificial stone



UNITED STATES PATEN'I OFFIC HUGH BI MeINTYR E'; OF'DETROIT; MICHIGAN.

lVlANUFACTURE OF ARTIFICIAL STONE.

SPECIFICATION forming part of Letters Patent No 267,239 dated November 7, 1882.

I Application filed March 21, 1.882. (No specimens.)

, To all whom it may concern: This composition forms an artificial stone Be it known that I, HUGH B. MCINTYBE, of which will resist the action of water, and may 25 Detroit, in the county of Wayne and State of be used wet when made into emery-wheels. Michigan, have invented a new and useful Im- I regard acetic and sulphuric acid as known sprovement in the Manufacture of Artificial equivalents of muriatic acid in this composi- Stone, of which the following is aspecification. tion, and do not wish to confine myself abso- L My invention consists in an artificial stone lutely to the proportions herein given, asthey o manufactured as hereinafter described. maybe varied somewhat I take equal parts 0 innriatic acetic or sul- What I claim as my invention, and desire 1o 'ihuric acid (muriatic acid liem'g' 'pr eierre'dSand to secure by Letters Patent, is

'w a? inthis mixture slake h 'draulic lime An artificial stone composed of hydraulic mntil efi'ervescence ceases. I then add lime of tie], slaked in a mixture of equal parts 3 5 enough mlverized red iron ore to highly color of water and muriutig acid, pulverized red iron p the mimadd four parts ore,.pulverizgdmj'i itliei sand, emery, or co; 15 of pulverized clay and eight parts of sand rund'um, andsili'gfzfttegr gla orsilicat eof potemerv or com I then thorouglilm ash, coinbincd substan ally-as herein set forth.

TE e whole mass in an ordinary pug-mill, add- Y ing thereto one part of silicate of soda or sili- H. B. MCINTYRE.

- cate of otash untila plasticmassisproduce'd '20 which can lie tamped in amold or Pressed Witnesses: 7 into shape When molded or presse urn ALFRED WOOD, miiout two hours at acompara /;"GEO." H. LOTHROP.

'-low heat. l I 

